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Always make sure all high-pressure water has been removed from valve by following machine manufacturers' safety instructions. Failure to do so can cause severe injury or death.
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Turn OFF all water pressure to the on/off valve.
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Turn the on/off valve ON to raise the needle from the accu seat.
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Components can be replaced with the valve body in the mounting collar.
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Loosen the adapter from the valve body using 1" and 13/16" wrench.
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Unthread the adapter from the valve body.
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Unthread the actuator from the valve body.
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Remove all the valve components from the valve body using the included dowel.
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Thoroughly clean the interior/exterior of the valve body with isopropyl alcohol before replacing the components.
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Check the top and bottom of the bore for cracks/blemishes. If excessive wear or cracks are visible, replace the valve body.
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Slide the needle bearing onto the needle point with the smaller step away from the needle point.
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Slide the high-pressure valve seal onto the needle point with the O-ring away from the needle bearing.
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Apply a high-pressure lubricant to the outside diameter of the high-pressure valve seal.
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Put the needle point at the top of the valve body.
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Use the dowel to push the needle in the valve body until the needle bearing bottoms out.
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Reconnect the air line to the top of the actuator.
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Clean the adapter of all blue goop with isopropyl alcohol or similar cleaning agent.
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Reapply Blue Goop to the top threads and to the top of the adapter.
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Put the accu seat at the top of the adapter with the flat side towards the adapter.
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Apply Blue Goop to the top of the accu seat.
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Turn the air to the actuator On.
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Thread the adapter into the valve body.
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Tighten the adapter into the valve body using a 1" and 13/16" wrench.
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Turn the air to the actuator OFF.
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Apply water pressure to the valve assembly to verify there are no leaks
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Quickly cycle the valve on and off a few times to purge the system of all contaminants before installing cutting head
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Reinstall cutting head and continue the cutting process.
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